Briggs & Stratton 01815-0, 01938-0 User Manual 2
Installation and
Start-Up Manual
Manual de Instalación y
Arranque
Manuel d'Installation et
Démarrage
Model 01938-0 & 01815-0 Part No. 192385GS Rev.J (07/17/06)
10kW / 12kW Rated
Home Generator
Questions? Help is just a moment away!
Preguntas? La ayuda es justa un momento
lejos!
Vous avez des questions? Vous n'avez pas
besoin d'aller loin pour trouver de l'aide!
Call: Home Generator Helpline
Llamada: Línea Directa de Generador de Hogar
Appelez: Ligne Directe de Génératrice la Maison -
1-800-743-4115 M-F 8-5 CT
Web: www.homegeneratorsystems.com
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Briggs & Stratton Power Products Home Generator
Installation Manual
TABLE OF CONTENTS EQUIPMENT
DESCRIPTION
This product is intended for use as an optional home
standby system which provides an alternate source of
electric power and to serve loads such as heating,
refrigeration systems, and communication systems that,
when stopped during any power outage, could cause
discomfort, or the like.This product DOES NOT qualify for
emergency standby as defined by NFPA 70 (NEC).
This manual contains installation, startup and adjustment
instructions for a Home Standby Generator that supplies
120/240 Volt, single phase, 60Hz devices.The Home Standby
Generator may be operated on LP or natural gas fuel.A
separate operator’s manual (part number 192384GS)
contains specifications, operating and maintenance
instructions for these models.
Every effort has been made to ensure that the information in
this manual is both accurate and current. However, the
manufacturer reserves the right to change, alter or otherwise
improve the system at any time without prior notice.
CUSTOMER
RESPONSIBILITIES
• Read and follow the instructions given in the Operator’s
Manual, especially the section regarding selecting essential
circuits.
• Follow a regular schedule in maintaining, caring for and
using your Home Standby Generator, as specified in the
Operator’s Manual.
INSTALLER
RESPONSIBILITIES
• Read and observe the safety rules.
• Refer to the list of recommended UL approved transfer
switches that is compatible with the Home Standby
Generator elsewhere in the carton.
• Read and follow the instructions given in this Installation
and Start-up Manual.
IMPORTANT: If operating the generator below 40°F,
it is recommended that a battery and oil warmer be
installed. If operating the generator below 32°F, a
battery and oil warmer MUST be installed. Both
items are available at your local servicing dealer.
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . 2
CUSTOMER RESPONSIBILITIES . . . . . . . . . . . . . . . . . . . . 2
INSTALLER RESPONSIBILITIES . . . . . . . . . . . . . . . . . . . . 2
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION PROCEDURES . . . . . . . . . . . . . . . . . . . . 4
Unpacking Precautions . . . . . . . . . . . . . . . . . . . . . . . . 4
Delivery Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Shipment Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Required Specialty Tools/Equipment . . . . . . . . . . . . . . 4
Home Standby Generator Location . . . . . . . . . . . . 4-5
Fuel and Electrical Inlet Dimensions . . . . . . . . . . . . . . 5
Lifting the Generator . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Access Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
THE GASEOUS FUEL SYSTEM . . . . . . . . . . . . . . . . . . . 7-8
Fuel Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fuel Pipe Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
KNOW YOUR SYSTEM CONTROL BOARD . . . . . . . . . 10
Generator AC Connection System . . . . . . . . . . . . . 11
Grounding the System . . . . . . . . . . . . . . . . . . . . . . . 11
Utility Control Circuit Connection . . . . . . . . . . . . . 11
Fault Detection System . . . . . . . . . . . . . . . . . . . . . . . 11
System Control Panel . . . . . . . . . . . . . . . . . . . . . . . . 12
BEFORE INITIAL ENGINE START-UP . . . . . . . . . . . . . . 12
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Battery Connection . . . . . . . . . . . . . . . . . . . . . . . 12-13
Fuel Supply System . . . . . . . . . . . . . . . . . . . . . . . . . . 13
FUEL SYSTEM SELECTION . . . . . . . . . . . . . . . . . . . . . . . 13
INITIAL START-UP (NO LOAD) . . . . . . . . . . . . . . . . . . 14
Engine Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 14-15
AUTOMATIC OPERATION SEQUENCE . . . . . . . . . . . . 15
SETTING EXERCISE TIMER . . . . . . . . . . . . . . . . . . . . . . 16
INSTALLATION INSPECTION . . . . . . . . . . . . . . . . . . . . 16
Fuel Comparison Chart . . . . . . . . . . . . . . . . . . . . . . 17
Size of Propane Tank Required at Various Temperatures
When Kept at Least Half Full . . . . . . . . . . . 17
Copyright © 2006 Briggs & Stratton Power Products
Group, LLC. All rights reserved. No part of this material
may be reproduced or transmitted in any form by any
means without the express written permission of Briggs &
Stratton Power Products Group, LLC.
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Briggs & Stratton Power Products Home Generator
Installation Manual
IMPORTANT SAFETY
RULES
The safety alert symbol ( ) is used with a signal word
(DANGER, CAUTION,WARNING), a pictorial and/or a
safety message to alert you to hazards. DANGER indicates
a hazard which, if not avoided, will result in death or serious
injury. WARNING indicates a hazard which, if not avoided,
could result in death or serious injury. CAUTION
indicates a hazard which, if not avoided, might result in
minor or moderate injury. CAUTION, when used
without the alert symbol, indicates a situation that could
result in equipment damage. Follow safety messages to
avoid or reduce the risk of injury or death.
Hazard Symbols and Meanings
• Adequate, unobstructed flow of cooling and ventilating air is
critical to correct generator operation.
• Despite the safe design of the Home Standby Generator,
operating this equipment imprudently, neglecting its maintenance
or being careless can cause possible injury or death.
• Remain alert at all times while working on this equipment.
NEVER work on the equipment when you are physically or
mentally fatigued.
• DO NOT use the generator or any of its parts as a step.
Stepping on the unit can cause stress and break parts.This
may result in dangerous operating conditions from leaking
exhaust gases, fuel leakage, oil leakage, and so forth.
Improper treatment of generator can damage it and
shorten its life.
CAUTION
• When using generator for backup power, notify utility
company.
• DO NOT touch bare wires or receptacles.
• DO NOT use generator with electrical cords which are worn,
frayed, bare or otherwise damaged.
• DO NOT handle generator or electrical cords while standing
in water, while barefoot, or while hands or feet are wet.
• If you must work around a unit while it is operating, stand on
an insulated dry surface to reduce shock hazard.
• DO NOT allow unqualified persons or children to operate or
service generator.
• In case of an accident caused by electrical shock, immediately
shut down the source of electrical power and contact the
local authorities. Avoid direct contact with the victim.
• Before performing any maintenance on the generator,
disconnect the battery cable indicated by a NEGATIVE,
NEG or (-) first.When finished, reconnect that cable last.
• After your Home Standby Generator is installed, the
generator may crank and start without warning any time there
is a power failure.To prevent possible injury, always set the
AUTO/OFF/MANUAL switch to OFF, remove the service
disconnect from the disconnect box AND remove the
15 Amp fuse BEFORE working on the equipment.
Generator produces powerful voltage.
Failure to properly ground generator can result
in electrocution.
Failure to isolate generator from power utility
can result in death or injury to electric utility
workers due to backfeed of electrical energy.
WARNING
• Install the fuel supply system according to applicable fuel-gas
codes.
• Before placing the Home Standby Generator into service, the
fuel system lines must be properly purged and leak tested.
• After the generator is installed, you should inspect the fuel
system periodically.
• NO leakage is permitted.
• DO NOT operate engine if smell of fuel is present or other
explosive conditions exist.
• DO NOT smoke around the generator.Wipe up any oil spills
immediately. Ensure that no combustible materials are left in
the generator compartment. Keep the area near the generator
clean and free of debris.
Propane and Natural Gas are extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
WARNING
• DO NOT tamper with governed speed.Generator supplies
correct rated frequency and voltage when running at governed
speed.
• DO NOT modify generator in any way.
Excessively high operating speeds increase risk
of injury and damage to generator.
Excessively low speeds impose a heavy load.
CAUTION
SAVE THESE INSTRUCTIONS
Fire
Explosion
Rotating Parts
Electrical Shock
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Briggs & Stratton Power Products Home Generator
Installation Manual
INSTALLATION
PROCEDURES
Unpacking Precautions
The unit is shipped bolted to its mounting pad, ready for
installation.Avoid damage from dropping, bumping, collision,
etc. Store and unpack carton with the proper side up, as
noted on the shipping carton.
Delivery Inspection
After removing the carton, carefully inspect the Home
Standby Generator for any damage that may have occurred
during shipment.
IMPORTANT: If loss or damage is noted at time of
delivery, have the person(s) making delivery note all damage
on the freight bill and affix his signature under the
consignor's memo of loss or damage. If loss or damage is
noted after delivery, separate the damaged materials and
contact the carrier for claim procedures.Missing or
damaged parts are not warranted.
Shipment Contents
The Home Standby Generator is supplied with:
• Home Standby Generator
• Pre-attached mounting pad
• One 24” flexible hook-up hose
• Installation and start-up manual (P/N 192385GS)
• Operator’s manual(P/N 192384GS)
• Illustrated parts list manual (P/N 193208GS for
model 01815 or P/N 193918GS for model 01938)
• Installation checklist (P/N 190840GS)
• Three access door keys
• Four lifting hole plugs
• Oil fill spout
• Touch-up paint
• One spare 15A fuse
• Diagnostic LED kit (diode/plate/decal/pin connectors (2))
Required Specialty Tools/Equipment
• Two 48” lengths of 1” OD pipe (NOT conduit)
• Hole punches for 16ga steel
• Torque screwdriver, 5 to 50 inch-pound range
Home Standby Generator Location
Before installing generator, consult with homeowner and
convey the following guidelines which may affect the
desired location.
Generator Clearances
Place generator in a well ventilated area,which will allow for
removal of deadly exhaust gas.DO NOT install generator
where exhaust gas could accumulate and enter inside or be
drawn into a potentially occupied building.Ensure exhaust gas
is kept away from any windows, doors, ventilation intakes or
other openings that can allow exhaust gas to collect in a
confined area (Figure 1).Prevailing winds and air currents
should be taken into consideration when positioning generator.
General Location Guidelines
• Install the unit outdoors ONLY.
• Place the unit in a prepared location that is flat and has
provisions for water drainage.
• Install the unit in a location where sump pump discharge,
rain gutter down spouts, roof run-off, landscape irrigation,
or water sprinklers will not flood the unit or spray the
enclosure and enter any air inlet or outlet openings.
• Observe that the 15 Amp fuse has been removed from the
control panel for shipping.
• DO NOT install this fuse until all plumbing and wiring has
been completed and inspected.
Installing the 15A fuse could cause the engine to start.
CAUTION
• Keep at least 5 ft. (152 cm) clearance on all sides of generator
including overhead.
Exhaust heat/gases can ignite combustibles or
structures causing a fire.
WARNING
Using a generator indoors WILL KILL YOU
IN MINUTES.
Exhaust contains carbon monoxide, a
poison gas you cannot see or smell.
NEVER use in the home
or in partly enclosed
areas such as garages.
ONLY use outdoors and
far from open windows,
doors, and vents.
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Briggs & Stratton Power Products Home Generator
Installation Manual
• Install the unit where the location of any services such as
phone, electrical, fuel, air conditioning, irrigation, including
covered, concealed and underground services will not be
affected or obstructed.
• Install the unit where air inlet and outlet openings will
not become obstructed by leaves,grass, snow, etc. If
prevailing winds will cause blowing or drifting, you may
need to construct a windbreak to protect the unit.
• Install the generator as close as possible to the Transfer
Switch to reduce the length of wiring and conduit.
• Install the generator as close as possible to the fuel
supply to reduce length of pipes.
IMPORTANT: Laws or local codes may regulate the
distance to the fuel supply.
The Home Standby Generator is shipped already attached
to its mounting pad. Unless mandated by local code, a
concrete slab is not required.
If mandated by local code, construct a concrete slab at least
3 inches thick and 6 inches longer and wider than the unit.
Attach unit to slab with 1/4” diameter (minimum) masonry
anchor bolts long enough to retain the unit.
Fuel and Electrical Inlet Dimensions
Figure 2, below, depicts the location of the fuel piping
connector.Also shown is the recommended location for
punching holes for attaching the power conduit.
Lifting the Generator
The generator weighs more than 375 pounds. Proper tools,
equipment and qualified personnel should be used in all
phases of handling and moving the generator.
Figure 2 — Generator Fuel and Conduit Attachment Locations, Oil Service Side of Unit
3/4” NPT
Fuel Piping
Connector
Recommended
Conduit Attachment
Area
4.5”
13.5”
Figure 1 — Home Standby Generator Clearances
Exhaust
Port
• If lifting or hoisting equipment is used, DO NOT contact any
power lines.
• DO NOT lift or move generator without assistance.
• Use lifting pipes as described in the section “Lifting the
Generator” in installation manual.
• The unit may shift on the lifting pipes during movement, which
can cause injury.
• DO NOT lift unit by roof as damage to generator will occur.
Hazardous Voltage
Contact with power lines can cause electric
shock or burn.
Lifting Hazard / Heavy Object
Can cause muscle strain or back injury.
WARNING
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Briggs & Stratton Power Products Home Generator
Installation Manual
Two 48” lengths of 1” O.D. pipe (supplied by the installer)
are required to lift the generator manually. Insert pipes
through the lifting holes located near the unit’s base, as
shown in Figure 3.
You may also lift the unit using a “hook and hoist” method
attached to the lifting pipes, provided that you use a
spreader bar to ensure that the chains or cables do not
touch the generator’s roof.
Retouch any chipped paint with supplied touch-up paint.
After paint is dry, and the unit is in place, fill the lifting holes
with the supplied lifting hole plugs.
Access Doors
The Home Standby Generator is equipped with an
enclosure that has four access doors (Figure 4).The doors
are named for a significant component located behind
them. Starting with the side that has the fuel connection
and proceeding clockwise, the doors are named:
• Oil Service door
• Air Intake door
• Control Panel door
• Battery door
Each Home Standby Generator is equipped with three
identical keys.These keys fit the locks that secure the Oil
Service and Control Panel doors.
Fuel
Inlet
Exhaust
Port
Door Lock
Screw
Door
Lock
Screw
Battery Door
Control Panel Door
42”
30”
29”
Figure 4 — Enclosure Access Doors
Air Intake Door
Oil Service Door
To lift:
Insert
pipe
here
Installer-supplied pipe
Figure 3 — Location of Lifting Holes
CAUTION
• Failure to install Oil Service and/or Control Panel doors while
operating the Home Standby Generator will cause overheating.
DO NOT operate the Home Standby Generator unless
the Oil Service and/or Control Panel doors are installed.
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Briggs & Stratton Power Products Home Generator
Installation Manual
To Remove an Access Door:
1. Insert key into lock of access door you wish to
remove and turn one quarter turn clockwise.
NOTE:The key is retained in the lock when the locks are
open.
2. Grasp door’s lift handle and pull door upwards until
security pins are free of lower base.
3. With the security pins free, pull the lift handle outward
(away) from the unit while pulling the door down and
out of the upper door channel.The door will come
free of the generator enclosure.
The Battery door does not have a lock and the Air Intake
door does not have a lock or lift handle.The Air Intake
door is opened by lifting on the louvers instead of a lift
handle. However, you must remove the door lock screws,
found directly above the center of the doors.
To Install an Access Door:
1. Support door by grasping lift handle or louver. Guide
top of door into generator enclosure.
2. Lift door up into its upper channel until security pins
clear sill of enclosure.
3. Push lower half of door into door recess until it is
flush with sides.
4. Seat door by pushing it down until rubber coated
security pins engage and door rests on mounting sill.
5. If installing a lockable door, turn key one quarter turn
counterclockwise. Remove key.
6. If installing air intake or battery door, replace the door
lock screw.
Check to ensure that all the rubber and foam vibration
dampers remain in place.This will minimize vibration noise.
THE GASEOUS FUEL
SYSTEM
TO THE INSTALLER: Consult with the Home
Standby Generator owner(s) and convey any technical
considerations that might affect their installation plans
before applying these general guidelines.
The following general rules apply to gaseous fuel system
piping:
• The piping should be of a material that conforms to
federal and local codes, rigidly mounted and protected
against vibration.
• Piping should be protected from physical damage where
it passes through flower beds, shrub beds, and other
cultivated areas where damage could occur.
• Install the flexible, gaseous hose (supplied) between the
Home Standby Generator Fuel Inlet port and rigid piping
to prevent thermal expansion or contraction from
causing excessive stress on the piping material.
NOTE:Where local conditions include earthquake,
tornado, unstable ground, or flood hazards, special
consideration shall be given to increase strength and
flexibility of piping supports and connections.
The information provided below is to assist
gaseous fuel system technicians in planning
installations. In no way should this information
be interpreted to conflict with applicable fuel gas
codes. Consult with your local fuel supplier or
Fire Marshall if questions or problems arise.
• DO NOT touch hot surfaces.
• Allow equipment to cool before touching.
Running engines produce heat.Temperature of
exhaust port and nearby areas can reach or
exceed 600°F (316°C).
Severe burns can occur on contact.
WARNING
• The entire flexible gaseous pipe must be visible for periodic
inspection and must not be concealed within, contact, or run
through any wall, floor, or partition.
The supplied flexible gaseous pipe is not to be installed
underground or in contact with the ground.
CAUTION
• LP gas is heavier than air and will settle in low areas.
• Natural gas is lighter than air and will collect in high areas.
• The slightest spark can ignite these fuels and cause an explosion.
Propane and Natural Gas is extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
WARNING
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Briggs & Stratton Power Products Home Generator
Installation Manual
• Piping must be of the correct size to maintain the
required supply pressures and volume flow under varying
generator load conditions with all gas appliances
connected to the fuel system turned on and operating.
• Use an approved pipe sealant or joint compound on all
threaded fittings to reduce the possibility of leakage.
• Installed piping must be properly purged and leak tested,
in accordance with applicable codes and standards.
Consider the following factors when planning to
install the fuel supply system:
The Home Standby Generator engine is fitted with a fuel
mixer system that meets the specifications of the California
Air Resources Board for “tamper-proof” dual fuel systems.
The unit will run on natural gas or liquefied propane.
• A minimum of one accessible, approved manual shutoff
valve shall be installed in the fuel supply line within 6 ft
(1.8 m) of the Home Standby Generator. A union or
flanged connection shall be provided downstream from
this valve to permit removal of controls.
• Natural gas fuel supply pressure at the generator's fuel
inlet port should be between 5 to 7 inches of water (in.
W.C.) at full load. LP fuel supply pressure should be 11 to
14 inches of water (in.W.C.) at full load.
The Home Standby Generator unit has been
factory set to run on natural gas. If you need to
change from natural gas to LP gas, the unit will need to be
reconfigured, as described on page 13.
It is recommended that the fuel connection incorporate
the following components:
• A manual fuel shut-off valve located in the interior of the
building.
• A manual fuel shut-off valve located outside the building,
just before the generator unit.
• Where the formation of hydrates or ice is known to
occur, piping should be protected against freezing.The
termination of hard piping should include a sediment trap
where condensate is not likely to freeze.
• A manometer port should be provided.
The manometer port permits temporary installation of a
manometer (Figure 5), to ensure that the engine receives
the correct fuel pressure to operate efficiently throughout
its operating range.
NOTE:A digital manometer, P/N 19495, is available at your
local Briggs & Stratton service center.
When the initial test runs are completed, the manometer is
removed and the port is plugged.A typical final fuel
connection assembly is shown in Figure 6.
Figure 6 — Completed Fuel Connections
Figure 5 — Temporary Manometer Installed
From Fuel
Supply Line
To Home Standby
Generator
• Before placing the Home Standby Generator into service, the
fuel system lines must be properly purged and leak tested.
• NO leakage is permitted.
Propane and Natural Gas is extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
WARNING
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Briggs & Stratton Power Products Home Generator
Installation Manual
Fuel Consumption
See Figure 7 for fuel supply requirements at half and full
load for both natural gas and LP vapor.
Fuel Pipe Sizing
Figures 8 and 9 provide the maximum capacity of pipe in
cubic feet of gas per hour for gas pressures of 0.5 psi or
less and a pressure drop of 0.3 in.water column. Specific
gravity of gas is shown.
Listed values compensate for a nominal amount of
restriction from bends, fittings, etc. If an unusual number of
fittings, bends, or other restrictions are used, please refer
to federal and local codes.
Model
Natural Gas* LP Vapor**
1/2 Load Full Load 1/2 Load Full Load
1938-0 84 162 34.19 65.81
1815-0 102 195 41.03 78.63
* = Natural Gas is in cubic feet per hour
** = LP Vapor is in cubic feet per hour
Figure 7 — Fuel Supply Requirements
NPT 10ft 15ft 20ft 30ft 40ft 50ft 60ft 70ft 80ft 90ft 100ft
3/4” 346 293 240 192 163 145 132 120 113 106 99
1” 653 549 446 360 307 274 250 230 211 197 187
Natural Gas (sg=0.65)
NPT 10ft 15ft 20ft 30ft 40ft 50ft 60ft 70ft 80ft 90ft 100ft
3/4” 277 192 158 126 107 95 87 79 74 69 65
1” 428 360 293 236 202 180 164 151 139 129 123
Liquid Propane (LP) (sg=1.50)
Figure 8 — NATURAL GAS (NG) Pipe Size - Gas Flow Chart, in cubic feet per hour
Figure 9 — LIQUID PROPANE (LP) GAS Pipe Size - Gas Flow Chart, in cubic feet per hour
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Briggs & Stratton Power Products Home Generator
Installation Manual
50/60 Hz Switch
12 Volt DC,
.5 Amp Output
Exercise Failure
Remote LED Output
Emergency Failure
12 Volt DC, .5 Amp Output — Internal power supply.
50/60 Hz Switch — Allows factory to select between
either 50 Hz or 60 Hz. Make sure the switch is in the
60 Hz position at all times for proper generator operation.
Emergency Failure — Use NO2, Common2 and NC2 to
hook up a siren, light, etc. to alert you in case of a failure
during a power outage.
Exercise Failure — Use NO1, Common1 and NC1 to
hook up a siren, light, etc. to alert you in case of a failure
during the exercise cycle.
Remote LED Output — Use this to hook up the extra
remote LED supplied with the generator.The remote LED
will turn on and off in a series of blinks if certain faults are
detected in the generator.
KNOW YOUR SYSTEM CONTROL BOARD
Compare this Control Board illustration with your generator to familiarize yourself with the location of these important
controls and connections:
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Briggs & Stratton Power Products Home Generator
Installation Manual
Generator AC Connection System
A single-phase, three-wire AC connection system is used in
the Home Standby Generator.The stator assembly consists
of a pair of stationary windings with two leads brought out
of each winding.The junction of leads 22 and 33 forms the
neutral lead, as shown schematically and as wiring diagram
in Figure 10.A complete schematic and wiring diagram can
be found in the operator’s manual.
NOTE: Neutral is not bonded to ground at generator.
Grounding the Generator
Ground the Home Standby Generator per applicable
codes, standards, and regulations.The generator GND lug is
located inside the air intake door.
Utility Control Circuit Connection
Control circuit interconnections consist of "Utility" leads.
These two leads must be routed in conduit. Control lead
functions are briefly described as follows:
• "Utility 1" and "Utility 2" deliver utility power to the
generator’s circuit board, charge the battery and when
utility is lost the generator will start.
Using installer-supplied minimum 300V, 14 AWG copper
wire, connect each control circuit terminal in the generator
to the Automatic Transfer Switch.
Fault Detection System
The light on the control panel is referred to as the
Diagnostic LED. It will turn on and off in a series of blinks if
certain faults are detected in the HSG.An extra LED and
mounting plate is supplied so that it can be installed at a
convenient indoor location.The owner will use it to
observe the status of the HSG. Consult with the owner for
a convienant location.
To install the remote LED panel:
• Apply the supplied decal to the supplied mounting plate.
• Push the LED through the mounting plate from the front
until it snaps in place.
• Using minimum 18 AWG wire, connect the remote LED
to the generator control board using supplied pin
connectors. Use wire nuts to attach wire to LED leads.
• Attach mounting plate to installer-supplied electrical box.
Refer to the section “Fault Detection System” in the
Operator’s Manual for operation.
Figure 10 — System AC Connections
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Briggs & Stratton Power Products Home Generator
Installation Manual
System Control Panel
Figure 11 depicts the Home Standby Generator control
panel, located inside the generator housing. Brief
descriptions of the controls used during installation. More
information may be found in the operator’s Manual.
AUTO/OFF/MANUAL Switch
This three-position switch is the most important control
on the system and is used as follows:
•“AUTO” position is the normal operating position. If a
utility power outage is sensed, the system will start the
generator.When utility power is restored, lets the engine
stabilize internal temperatures, shuts off the generator,
and waits for the next utility power outage.
•“OFF” position turns off running generator, prevents
unit from starting and resets any detected faults.
•“MANUAL” position starts the engine after a short
amount of time. It is used for maintenance or diagnostic
functions.
15 Amp Fuse
Protects the Home Standby Generator DC control circuits.
If the fuse has ‘blown’ (melted open) or was removed, the
engine cannot crank or start. Replace the fuse using ONLY
an identical BUS AGC 15A fuse. One spare fuse is supplied
with the unit.
BEFORE INITIAL START-UP
Engine Oil
This engine is shipped from the factory filled with the
recommended oil. Before starting the engine, check oil level
and ensure that engine is serviced as described in the
engine operator’s manual.
Oil Considerations
Your Home Standby Generator is equipped with an engine
that has been pre-run at the factory and does not require
the traditional “break-in” procedure.
The system is filled with synthetic oil (API SJ/CF 5W30W).This allows for system operation in the widest range
of temperature and climate conditions.
NOTE:The use of synthetic oil DOES NOT alter the
required oil change intervals described in the engine
operator’s manual.
Battery Connection
The Home Standby Generator is supplied with a 12Volt
DC,AGM type, 33Amp-Hour, valve regulated battery. It is a
sealed, lead-acid rechargeable battery. It is installed in the
unit and the battery cables are connected at the factory.The
unit’s 15 Amp fuse, which isolates the battery and prevents
the unit from starting, has been removed for shipping.The
battery will lose some charge charge prior to installation of
the generator. If battery voltage is below 12Volts, charge the
battery.
IMPORTANT: If battery voltage is below 5 Volts, it may
not take a charge and you will need a new battery.
Charging the Battery
If it is necessary to charge the battery, proceed as follows:
1. Set the generator's “AUTO/OFF/MANUAL” switch to
OFF.
2. Remove the 15 Amp fuse from the control panel.
3. Disconnect the negative battery cable to the negative
battery terminal (indicated by NEGATIVE, NEG, or (-).
4. Charge battery with battery charger at 2 Amps until
battery holds 12 Volts.
Hour Meter
Circuit
Breaker
Set Exercise
Switch
AUTO/OFF/
MANUAL
Switch
Diagnostic
LED
15 Amp
Fuse
Figure 11 — Home Standby Generator Control Panel
CAUTION
• Refer to engine manual for oil fill information.
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
Any attempt to crank or start the engine before it has
been properly serviced with the recommended oil will
result in equipment failure.
CAUTION
• DO NOT attempt to jump start the battery.
• Damage to equipment resulting from failure to follow this
instruction will void warranty.
Failure to disconnect negative battery cable will result
in equipment failure.
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Briggs & Stratton Power Products Home Generator
Installation Manual
NOTE:With the battery installed and utility power
available to the Automatic Transfer Switch, the battery
receives a trickle charge whenever the engine is not
running.This process may take up to 72 hours to fully
charge a battery from 5 Volts.The trickle charge cannot be
used to recharge a battery that is completely discharged.
5. Connect the negative battery cable to the negative
battery terminal (indicated by NEGATIVE, NEG, or (-).
6. Ensure hardware on both positive and negative battery
terminals is secure.
7. Reinstall the 15 Amp fuse in the control panel.
8. Set the generator's “AUTO/OFF/MANUAL” switch to
AUTO.
Servicing the Battery
If it is necessary to service the battery, proceed as follows:
1. Set the generator's “AUTO/OFF/MANUAL” switch to
OFF.
2. Remove the 15 Amp fuse from the control panel.
3. Service or replace battery as required.
4. Connect the red battery cable to the battery positive
terminal (indicated by POSITIVE, POS, or (+).
5. Connect the negative battery cable to the negative
battery terminal (indicated by NEGATIVE, NEG, or (-).
6. Ensure hardware on both positive and negative battery
terminals is secure.
7. Reinstall the 15 Amp fuse in the control panel.
8. Set the generator's “AUTO/OFF/MANUAL” switch to
AUTO.
Fuel Supply System
Ensure that all fuel pipe connections are tight, secure and
without leaks.
Ensure that all gas line shutoff valves are OPEN and that
adequate fuel pressure is available whenever automatic
operation is desired.
FUEL SYSTEM SELECTION
The engine of your Home Standby Generator is factory
calibrated to run on natural gas (NG). It may also be
operated on liquefied petroleum (LP).There is no additional
hardware/equipment required to switch between either
fuel. However, LP fuel inlet pressure must be between
11 and 14 inches water column.
To configure the fuel system for LP use:
• Set the AUTO/OFF/MANUAL switch to OFF.
• Remove the 15 Amp fuse.
• Connect the fuel transfer solenoid as follows:
1. Remove the “Oil Service” access door.
2. Join the two-pin electrical connector shown in
Figure 12.
3. Reinstall the “Oil Service” access door.
• Reinstall the 15 Amp fuse.
• Set the AUTO/OFF/MANUAL switch to AUTO.
The system is now ready to operate automatically using LP
fuel.With a fixed main jet for LP gas, there is no need to
perform any engine adjustments for LP operation.
• DO NOT install the 15 Amp fuse until all plumbing and wiring
has been completed and inspected.
Installing the 15A fuse could cause the engine to start.
CAUTION
• DO NOT dispose of battery in a fire.
• DO NOT allow any open flame, spark, heat, or lit cigarette
during and for several minutes after charging a battery.
• DO NOT open or mutilate the battery.
• Wear protective goggles, rubber apron, and rubber gloves.
• Remove watches, rings, or other metal objects.
• Use tools with insulated handles.
Storage batteries give off explosive hydrogen gas
during recharging.
Slightest spark will ignite hydrogen and cause
explosion.
Battery electrolyte fluid contains acid and is
extremely caustic.
Contact with battery contents will cause severe
chemical burns.
A battery presents a risk of electrical shock and
high short circuit current.
DANGER
Figure 12 — Fuel Transfer Solenoid Connection
Push two
connectors
together
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Briggs & Stratton Power Products Home Generator
Installation Manual
INITIAL START-UP (NO LOAD)
Begin testing the system without any electrical loads
connected, as follows:
1. Set the AUTO/OFF/MANUAL switch to OFF.
2. Set the generator’s main circuit breaker to its OFF
(open) position.
3. Install the 15 Amp fuse in the control panel.
4. Set the AUTO/OFF/MANUAL switch to MANUAL.
NOTE:When the Home Standby Generator is started for
the very first time, it will require that air in the gaseous fuel
lines be purged.This may take a few minutes.
5. DO NOT crank engine for more than 15 seconds, then
pause for 15 seconds to reduce heat in the starter.
6. Repeat process until engine starts.
7. Listen for unusual noises, vibration or other indications
of abnormal operation. Check for oil leaks while the
engine runs.
8. Let the engine warm up for about five minutes to allow
internal temperatures to stabilize.Then, set the
generators main circuit breaker to its ON (or closed)
position.
9. Connect an accurate AC voltmeter and a frequency
meter to check generator output at the load side of
the circuit breaker.Voltage should be 239-262Volts,
frequency should be 62.0 - 62.5 Hz.
NOTE: If either parameter is outside these ranges,
perform the Engine Adjustments described on page 14.
10. Check generator output between one of the generator
connection lugs and the neutral lug, then between the
other generator connection lug and the neutral lug. In
both cases, voltage reading should be between
121-131 Volts.
11. Set the AUTO/OFF/MANUAL switch to OFF. Engine
should stop.
IMPORTANT: DO NOT proceed until you are certain
that generator AC voltage and frequency are correct and
within the stated limits.To obtain the proper generator
frequency, see Engine Adjustments on page 14.
Engine Adjustment
There are regional variances in the composition of natural
gas. Each HSG unit is adjusted at the factory for NG
operation. If the generator output voltage or frequency
measured during Initial Start-Up (paragraph #9) is outside
the listed ranges, the combustibility of the gas supplied at
the installation site may be substantially different.
To adjust the engine for this difference, proceed as follows.
1. Remove the Air Intake and Control Panel access doors.
2. Remove the three M5 sheet metal screws that hold
the control panel wiring cover to the air intake guard
(Figure 13).
3. Connect an accurate frequency meter to the load side
of the main circuit breaker (on the back of the control
panel).
4. Ensure that the 15 Amp fuse is installed.
5. Set the generator’s main circuit breaker ON.
6. Set the AUTO/OFF/MANUAL switch to MANUAL.
When the engine starts, allow it to warm up for two
minutes.
Figure 13 — Accessing Back of Control Panel
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Briggs & Stratton Power Products Home Generator
Installation Manual
7. Normal no load frequency is 62.0 to 62.5 Hz. If
adjustment is needed at no load, slowly rotate the
governor adjustment nut (Figure 14) clockwise and/or
counterclockwise until frequency is 62.0 to 62.5 Hz.
8. Turn the service disconnect to the transfer switch off.
The transfer switch will connect to the generator after
a short time delay.
9. Load generator to rated Natural Gas rating.
10. Connect an accurate frequency meter to the load side
of the main circuit breaker (on the back of the control
panel). Frequency should be above 57.0 Hz.
11. If frequency is below 57.0 Hz, slowly rotate the
governor adjustment nut clockwise and/or
counterclockwise until frequency is above 57.0 Hz.
12. Turn the service disconnect to the transfer switch on.
The transfer switch will connect to the utility after a
short time delay.
13. Set the AUTO/OFF/MANUAL switch to OFF.
14. After the engine has stopped running, reinstall the
control panel wiring cover to the air intake guard.
15. Reinstall the air intake and control panel access doors.
16. Set the AUTO/OFF/MANUAL switch to AUTO.
AUTOMATIC OPERATION
SEQUENCE
The generator’s control panel houses a logic control circuit
board.This control board constantly monitors utility power
source voltage. Should that voltage drop below a preset
level, control board action will signal the engine to crank
and start.
When utility source voltage is restored above a preset
voltage level, the engine is signaled to shut down.
The actual system operation is not adjustable and is
sequenced by sensors and timers on the control board, as
follows:
Utility Voltage Dropout Sensor
• This sensor monitors utility source voltage.
• If utility source voltage drops below about 70 percent of
the nominal supply voltage, the sensor energizes a
6-second timer.The timer is used to ‘sense’ brown-outs.
• Once the timer has expired, the engine will crank and
start.
Utility Voltage Pickup Sensor
This sensor monitors utility power supply voltage.When
that voltage is restored above 80 percent of the nominal
source voltage, a time delay starts timing and the engine
will go to engine cool-down.
Engine Cool-down Timer
• When the load is transferred back to the utility power
source, the engine cool-down timer starts timing.
• The timer will run for about one minute, then the
generator will stop.
• Minimum engine run time is 5 minutes.
Figure 14 — Governor Adjustment Nut
Governor
Adjustment Nut
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